* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-color: #e0e0e0;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.6s;
  }
  
  body.dark {
    background-color: #030205;
  }
  
  .radio-btn {
    width: 150px;
    height: 80px;
    padding: 10px;
    background-color: #27173a;
    border-radius: 50px;
    overflow: hidden;
    cursor: pointer;
  }
  
  .radio-btn .radio-inner {
    position: relative;
    width: 60px;
    height: 60px;
    background-color: #ffc207;
    border-radius: 50%;
    transition: all 0.6s;
  }
  
  .radio-btn .radio-inner::before {
    content: "";
    position: absolute;
    top: 0;
    left: -60%;
    width: 100%;
    height: 100%;
    background-color: #27173a;
    border-radius: 50%;
    transform: scale(0);
    transition: all 0.6s;
  }
  
  .radio-btn .radio-inner.active {
    transform: translateX(calc(150px - 80px));
  }
  
  .radio-btn .radio-inner.active::before {
    left: -25px;
    transform: scale(1);
  }